[quote] My husband and I usually don't have any luck with certified mail because she won't pick it up, and they always get returned to us. Unfortunately that works fine with notices (like when we moved) because it shows where it was sent to her address and then returned, but with medical bills... not so much. [/quote]
I just found this interesting information about using certified mail for just these kinds of purposes. Wow! There is so much to consider.